Question

How many grams of glucose be dissolved to make one-litre solution of 10% glucose?

• A. $10g$
• B. $180g$
• C. $100g$
• D. $1.8g$

Answer 1

Answer: (C)

$100g$
Weight/Volume percentag is defined as percentage of mass of solute in grams per $1$ ml of volume of solution. it is denoted as $w/v\%$.

$w/v\%=\frac{W}{V}\times 100$

Here, $W=$ weight of solute in grams

$V=$ volume of solution in ml

Volume of solution $=1$ litre $=1000$ ml

$w/v\%=10\%$

Mass of glucose dissolved is given by $=\frac{10}{100}\times 1000=100$ g

Hence, the correct option is $C$